.container {
    width: 60%;
    max-width: 800px;
    margin: 50px auto;
    padding: 20px 30px;
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.container h2 {
    text-align: center;
    font-weight: bold;
    margin-bottom: 20px;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.container h2 svg {
    flex-shrink: 0;
}

.form-group {
    margin-top: 20px;
    font-size: 16px;
    color: #555;
}

.form-group label {
    margin-bottom: 5px;
    display: block;
    font-weight: bold;
}

.form-control {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: #17a2b8;
    box-shadow: 0 0 5px rgba(23, 162, 184, 0.5);
    outline: none;
}

/*.custom-select {*/
/*    border-radius: 5px;*/
/*    padding: 10px;*/
/*    font-size: 16px;*/
/*    background: #fff;*/
/*    border: 1px solid #ddd;*/
/*    transition: all 0.3s ease;*/
/*}*/
.custom-select {
    height: 45px; /* 增大高度，确保文字完全显示 */
    line-height: 1.5; /* 设置行高，避免文字被裁剪 */
    padding: 5px 10px; /* 增加内边距，提升显示效果 */
    font-size: 16px; /* 确保字体大小适中 */
    box-sizing: border-box; /* 确保 padding 和 border 不影响高度 */
    border: 1px solid #17a2b8; /* 增加边框样式，与界面风格统一 */
    border-radius: 5px; /* 圆角样式 */
}


.custom-select:focus {
    border-color: #17a2b8;
    box-shadow: 0 0 5px rgba(23, 162, 184, 0.5);
    outline: none;
}

.form-group .btn-lg {
    width: 150px;
    font-size: 1.2rem;
    margin-left: 10px;
    padding: 10px;
    border-radius: 5px;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.btn-info {
    background: linear-gradient(to right, #4facfe, #00f2fe);
    color: #fff;
    border: none;
}

.btn-info:hover {
    background: linear-gradient(to right, #00f2fe, #4facfe);
    box-shadow: 0 4px 10px rgba(79, 172, 254, 0.5);
}

.btn-secondary {
    background-color: #6c757d;
    color: #fff;
    border: none;
}

.btn-secondary:hover {
    background-color: #5a6268;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    .container {
        width: 90%;
    }
    .form-group .btn-lg {
        width: 100%;
        margin-top: 10px;
    }
}
